Angle cock



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I f implication.lel March 30, 1,9265. Bieri-a1 Eo. 98,5654.4

This invention relates to an angle cock for use` in connection with 'fluid pressure air brake systems for vrailway -rolling stock, 'and has for its object. to provide, in a manner as hereinafter'set forth', a-'device of the .class referred to for reducing-the pressure of. alron vthe air hose line to an extent,to vprevent the separation of the sections of the hoselme, to overcome the pulling of the tram pipe sec- -1'0 Vtion from under the car when it is desired to uncou le the hose line sections, rto prevent 'the ylngaround of the hoseline sections 1n a. direction to injure a trainman during the uncoupling of the hose lme sections, to overcome the blowingof cinders .and dust into the face' of a tirainmanwhe'n the hose line sections are uncoupled,to prevent the stick- -the engineer that,,something4 is wrong with thefbrake system when an angle .cockis .losed under such Aconditions providing a -safetyappliance to avoid damage to equipvment.

f Further objects vof Athe invention are to hereinafter set forth, 'for the purpose referred .to

a manner as an angle 600k which is simple inits construction and arrangement, strong, durable, compact, thoroug exgnsive to manufacture..

struction, combination and'arran ement o ing drawings, wherein isshownmnfembodiment of the'inventiomjbut itis tobe -'under-f stood that changes,var 'ia'iz'iorls and Amodifications' canibe resorted'ftowhch fall within'A .of 'the claims'hereunto" appended. vis furthermore 'formed with. an `annular jitllzlxn e 17 which j abutsfagainst the' lbottom of i. e

ing from thel body' portion 15de-a polygonal# shaped extension '18. or'the reception of af the songe In 't e drawings wherein 'likereerence characters A'denote lcorresponding partsandA t'o readily indicate to 1y ecientin its. use, conveniently operated, readily installed and comparatively .m5

ith theforegoing and aber objeta-sia view the invention consiste 'of the novel conl f of diametrically opposed slots 13, 14, which lustrating the anule cock in open osigat v v .l l.' 'ber Figure 4. is a. view similar to lFigure 3 with the angle 'cock closed.

Referring to the drawings 1n detail 5 geni `-erally indicates the casin -of theangle cock and which .is-of tubular orm. Thecasing -5 .includes a body portion 6 formed with avertically disposed, cylindrical opening 7 at the.

.bottom thereof vand the wall of said opening isthreaded throughout. The bod portion 6 is furthermore provided with a rusto-conical shaped chamber 8 which extends from the upper. end ofthe opening 7 and opens at the top of thel body portion 6. The chamber `8 is vertically disposed. The outer'side of the lbody portion 6 is formed, centrally thereof, with a vertically disposed slot'9 which opens into the passagel 8 and the inner side .of the body portion .-6, centrally thereof, is provided' with a vertically disposed slot 1.0 which` open's into the chamber 8. -The slots 9 and 1() .are substantially rectangular in contour,alxgned wxth'each lother and are poitioied centrally with respect to the cham- Arran ed within-the chamber 8is a bushing 11W ich corresponds incontourto the shape of the-chamber 8 and is of the vsame height. as the' height of the latter. The bushing 11-at its upperend is flushed with the top ofthe body portion 6and ismaintained -in position, within'the body portion 6, by a vclosure lhng'm at the lower end of the Ichainber 8. e bushing 11 is formed with a pairalign respectively' with the slots 9.and 10.

The' slots 13 and 14 areofthe same contour,

bod .portion 15, peripherally threaded as at 16 or enga-gement'with the threads of the wall ofthe opening'. The body portionl ody portion 6"of the casing 5. Dependsuitable tool for connecting and discpnnectingthe 'plug 12 to: and from the' lower end ing and openig has its'in'ner end, when the plug 12 is secured to tliecasing 5, positioned to support the bushing 11 in the position as shown in Figure 1. The bottom edge of the bushing ,11 seats on the inner end of the body portion sists. of a flaring upper portion 20,.a circular intermediate portion 21 and asemi-spherical lower portion 22. The top of the portion 22 is of less diameter than the diameter of the portion 21 thereby providing a seat 23 for a' ur-pose to be presently referred to.

Jxtending through the bushing -11 is a plug valve referred to generally by the reference character 24 and which consists of a body portion formed of a tapered upper` f part 25 of circular cross section, an intermediate part 26 having a taperedl outer peripheryv27 and a vertically disposed plane inner periphery 28. The said intermediate part 26 is segmental in cross section. The plug valve further includes a tapered lower part 29 of circular cross section and which has 4depending from the bottom thereof a circular collar 30 which is inset with respect to formed vwith a centrally dispose the outer periphery of the said part 29. The bottom of the lower partl29' is formed with a pocket or recess 31 and the inner face ci the collar 30 forms a'continuation of the wall of the recess 31. The lower art 29 is vertically extending passage32v which opens into the recess 31 at the top "thereof andsaid recess 31- opens intothe chamber 20.' The lower corner` 33 of the part 29 is positioned below -the bottom edge of the bushing 11 andseats on the wall of the flaring portion 20 of vthe chamber 19. The collar 30 extends into the chamber 19. The opter face 27 of the intermediate part 26 forms a continuation of the y. outer faceof the upper part 25 and the lower part 29 of the plug valve. 'A The inter- 'mediate Apart 26 gradually decreases in width part 29 to the part 25 of the plugA from the valve. Formed integral with the top of the upper part, 25v of the plug valve is a polygonal extension 34, which is arranged exteriorly of the casing 5. Connected to the `extension 34 is a shifting means, of known construction, for the plug valve and'said means is indicated at 35. It is thought unnecessary to specifically describe this means as it is the shifting mechanism now employed for the plugvalves of angle cocks.

l Integral with and rprojecting from that si e of the body portion 6 formed with the slo 10 is a cylindrical interiorly threaded' extension 36 for connecting the angle cock to the train linepipe section, lnot shown.

Projecting from that side of the body port-ion 6 provided with the slot 9 is a curved tubular, interiorly threaded extension 37 for connecting a section of the hose line with the angle cock.v The hose line section is not shown.

Arranged within the body4 portion 19, mounted upon the seat 23 and extending into the pocket 31, as well as bearing against the part 29 of the plug valve, is a coiled spring 38 which normally acts to maintain the plug valve in engagement with the inner face of thebushing 11 in a snug-likel manner, but

not to prevent the shifting of the plug valve opens into the atmosphere and is positioned` in one of the non-slotted sides of said body portion 6v and is further arranged a substantial distance above the bottom of the body portion. It is the outer end of the port 39 which opens into the atmosphere and the inner end of said port registers with an inclined port 40' formed in the vbushing 11 at a point in close proximity, but below, of the transverse median of the bushing 11. The outer end of the port 40 registers with the inner end of the port 39 and theinner end of the port 40 opens into the chamber 8. The port 40 extends in the saine plane as the port 39. The ports 39 and 40 incline downwardly with respect'tothe vert-ical axis of the body portion 6. Thel ports 39 and 40 are provided for reducing the pressure of air -on the air hoseline to an extent to prevent the separation of .the sections of the hose line, to overcome thc pulling of the train pipe section from under the car during the uncoupling of the hose line sections, to prevent the flying around of the hose sections in the direction to injure/'a trainman, to overcome the blowing of cinders and dust into the :tace of the trainman when uncoupling they hose line sections, to prevent the sticking of the brakes, and to readily indicate to the englneer that something is wrong with the brake systemwhen the angle cock is closed,

under such conditions providing a safety appliance to avoid damage to equipment. When the plug 4Wtlve is in openposition, as shown in Figure 3,vv for`tl1e purpose of cstablishing communication between the train pipe section and a hose line section, the .intermediate part 26 of the plug 'valve closes the port 40, see Figure 3,- but whenthe valve plug is in position to shut oil' coinmunircati'onA 'between the train pipe section and the hose line sections the port 40 is openedto the large passage'39 formed in the plug valve due to the manner of setting up the parts 25, 26 and 29 with respect'to eachother. When the port 40 is opened to lorsI l' plug valve is not only employed `for closinglemployed for galassi.

the passage 39the air or pressurein the liose'line section will be reduced, due to the fact that the air will escape to the atmosphere, as indicated by the arrow shown in Figure 4. The intermediate vpart 2610i the the port slot 14vto the slot 13 and furthermore provides for the free passage 'of air from'the hose line section to the port when the .latter isl open. The opening 32 in the part 29 of theplug valve provides for the passage of air -into the chamber 19 so that the, pressure thereofl will tend to snugly cause 4an engagement of theplug valve with the inner face of the bushing. The chamber 8 in the casing 5 is termed a valve chamber. The slots '10 and 14 an inlet for said chamber and the slots 9 and 13 an outletfor said chamber. The registering ports l. 39 and 4() are termed a pusher reducing passage leading from the valve chamber tol the atmosphere. Owing tothe manner of positioning the part 25.-'of the valve plug so that its lower end will extend below the top of the inlet and outlet for the valve chamber, the lower portion of said part 2 5, in connection with the intermediate part 26 acts as av means for opening and closing communication between the' train line section andthe hose line sections.` 'When the valveis in the position as shown in Figure4,

the pressure in the hose line sections is rduced to the desired extent to perform 'the functions herenbefore referred to.

Although -an angle cock, in accordance with this inventiomis designed primarily forl use in connection with Huid pressure air'brake systems for railway rolling stock, yet it 'is to be understood that the angle cock can be employed in 'connection with steam heating systems for railway trains, or for any other purposes for which it is found applicable.

' It is thought that thelmany advantages 'of an angle cock, in 'accordancewith this. invention, can be readily understood, andl although the preferred embodiment of the' invention is as illustrated and described,

yet it is to' be understood that changes in 4- the details of construction canl be had which will fall within the scope of the invention as claimed. -l

-What lclaim is:--. 1. An angle cock comprising a casing procvided with a valve chamber and having an inletand an outlet, a bushing arranged 'in said chamberand provided with slots reg istering with said inlet and outlet, said casing and bushing having registering ports" for establishing communication between said chamber and the atmosphere, said ports positioned above the bottom -of the bushing 'and casing, a shiftable plug valve mounted in said bushing and having one side thereof cut away t'o provide a passage formed of a top, side and a bottom wall, said valve further constructed and arranged in connecmunication :between saidl inlet and outlet, for independently closing said outlet, for closing said ports to said chamber and for establishing communication between the outlet and said said casing urtlier and said valve provided with an opening for establishing communication between said passage and said pressure receiving chamber.

' 2. An angle dock comprising acasing provided with a valve chamber' and having an inletV and an outlet, a bushing arranged in said chamber and provided with slots registering with said inlet and outlet, said casing and bushing having lregistering ports orts when the inlet is closed, rovided with a presa sure recelvmg cham er below said valve,.

.tion with said passage for establishing comfor establishing communication between said chamber and the atmosphere, said ports positioned above the bottom of the bushing and casing, a shiftable plug valve mounted in said bushing and having one side thereof Icut away to provide a passage formed of a top, side and a bottom wall, said valve4 further constructed and arranged in connec 2-3- tion with said passage for establishing coinmunication between s aid inlet and outlet,

for. independentlyl closing lsaid outlet, forclosing. said'vports to said chamber andfor '1 establishing communication between the out- .letgand .said iports when `the inlet is closed,

said casing rther provided withfa pressure receiving chamber below said valve,

saidA valveprovided with an opening for establishing communication between i said passage and saidpressure receiving chamber, and said portsV inclining downwardly towards the outer fcace of said casing and further extending in the sameinclined plane throughout. Y

3. ln an an le cock for the purpose rcferred to ap ug valve comprising a one piece body portion formed of a tapered upper part of circular cross sectionyan intermediate part of segmental cross section, a tapered lower part of circular cross section and of greater ,diameter throughout than said upper part', said intermediate part lhaving' its outer periphery tapered to form a continuation of the lperipheryof said upper termediate YVparts .provi lng' said body portonwithl anenlarge'd passege formed with la top', a 'bottom and-an mner wall, said intermediate part graxlually decreasing in tu Width from` its lowerl end to its upper end, said lower part provided with a pocket in iis bottom and-further provided with avver-` tical opening for establishing communica- `t1onbetween said passege and said pocket. 10

In testimony whereof, I aiiix my signare hereto. y 'l f JAMES A. CLIFT. 

